Empty string: Difference between revisions
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say 'String is empty' unless $s.chars; |
say 'String is empty' unless $s.chars; |
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say 'String is not empty' if $s.chars;</lang> |
say 'String is not empty' if $s.chars;</lang> |
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=={{header|PHP}}== |
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<lang Php><?php |
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$str = ''; // assign an empty string to a variable |
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// check that a string is empty |
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if (empty($str)) { ... } |
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// check that a string is not empty |
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if (! empty($str)) { ... } |
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// we could also use the following |
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if ($str == '') { ... } |
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if ($str != '') { ... } |
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if (strlen($str) == 0) { ... } |
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if (strlen($str) != 0) { ... }</lang> |
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=={{header|PicoLisp}}== |
=={{header|PicoLisp}}== |
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